Valve.



E. P. ALLEN.

VALVE. APPLIOATION FILED APR. 15, 1905.

Patented May 10, 1910.

Jig Mentor 60% flax.

s'r'rns Pagan orrion EVERETT I. ALLEN, CHICAGO, ILLINOIS, ASSIGNOB TONORWALL MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

. VALVE.

Specification of Letters Patent.

Patented May 10, 1910.

Application filed April 15, 1905. Serial No. 255,761.

oago, county of Cook, State of Illinois, have invented a certain new anduseful Improvement in Valves, and declare the following to be a full,clear, and exact description of the same, such as will enable othersskilled in the art to which it pertains to make and use the same,reference being had to the accom anying drawings, which form a part 0this specification. v

My invention relates in eneral to valves for controlling the flow offluid through a conduit, and more particularly to valves used in heatingsystems intermediate of the radiators and pipes for supplying theheating medium.

It is customary in steam and hot water heating systems to providehand-operated valves for controllin the flow of the heating medium tothe ra iator. Much difliculty is experienced in preventing leakage ofthe heating medium from the valve casings into which the valve operatingstems extend. It is usual to provide packing of some sort around thevalve stems which is however objectionable owing to the fact that thematerials best adapted for producing a tight joint deteriorate fromcontact with the steam and packings formed of other materials be comeloose with usage.

The primary object of my invention is to provide a valve for controllingthe flow of fluid through a conduit which will require no packing 1norder to render the same proof against leakage.

A further object of my invention is to provide a valve for' controllingthe communication of a radiator with a steam heating system which willbe comparatively simple in construction, inexpensive in manufacture, andeflicient and durable in use;

The embodiment of my invention herein disclosed may be generallydescribed as con sisting in a valve casing, a valve seat within saidcasing, a valve adapted to engage and disengage the valve seat, a stemfor operating the valve extending within a tubular extension of thevalve casing but longitudinally immovable relatively thereto,.an annularflange rigidly secured to the valve stem, 21 seat at the upper end ofthe extension of the valve casing with which said flange engages, a capsurrounding the valve stem and secured to the upper end of the extensionof the valve caslng, anda spring interposed between said ca and saidflange its cooperating seat. Y

My invention will be more fully described hereinafter with reference tothe accompanying drawing in which the same is illustrated as embodied ina convenient and practical form, and in which,

Figure 1 is a central sectional view, and Fig. 2 a cross section on line2-2 Fig. 1.

The same reference characters are used to designate the same parts inthe two figures ofthe drawings.

Reference letter A designates the valve casing which isadapted to beinterposed between a conduit for a heating medium and a radiator.

A indicates an interiorly screw-threaded coupling formed integrally withthe valve casing which is ada ted to be united to the conduit throughwhich the heating medium flows. l

A indicates an exteriorly screw-threaded coupling formed integrally withthe valve casing and adapted to be connected to a radiator by a shortsection of pipe A.

0, indicates a ring engagin the coupling A and securing thereto the pipesection A B designates a tubular extension of the valve casin providedwith an exteriorly screw-threa ed lower end which is received within theupper portion of the valve casing. A circular seat 72 preferably convexin cross section is formed at the upper end of the tubular extension Bof the valve casing. A valve stem E extends within the upper portion ofthe valve casing and is provided with an annular laterally projectingflange e which over-lies and engages the seat 6.

F designates acap which surrounds the valve stem E and is in screwthreaded en-' gagement with the upper end of the tubular extension B ofthe valve casing. A spring f is interposed between the upper end of thecap F and the flange e the tension of which retains the flange in closecontact with the under-lying circular seat 7f.

;E indicates a disk or other form of handle rigidly fixed to the upperend of the valve stem E for rotating the latter.

C designates the valve within the casing A which is adapted to engagethe-seat a to cut oil the flow of the heating medium for retaining thelatter in tight contact with through the valve casing and is adapted tobe moved away from its seat to permit the flow of the heating medium tothe radiator.

Any suitable intermediate connectlng mechanism may be provided foruniting the valve stem E to the valve Owhereb the latter may be actuatedto engage and isengage its seat.

I have illustrated in. the drawing'practical and-convenient means for oerativel connecting the valve stem and via ve whic may be described asfollows: The valve C is provided with a hollow interiorly screwthreadedshank G into which extends an ext eriorly screw-threaded rod 03'. Therod 1d 1s provided with laterall projecting lugs B of the casing.

' The operation of my improved valve is as follows: When the parts arein the position indicated in Fig. 1, the valve is closed and iscommunicated through the valve stem E to the rod D which throughengagement of the lugs D thereon with the thread B withm the upperportion of" the casing elevates the rod D and thereby lifts the valve Gaway from its seat a through the screw-threaded engagement of the lowerend of such rod with the shank of the valve. -When the valve is in itsopen position it is moved downwardly into contact with its'seat byrotating the hand diskE in a reverse direction thereby moving downwardlythe rod D and with it the valve C. v

The tension of the spring F at all times retains the flange e in tightcontact with the convex circular seat the leakage of any of the heatingmedium or whatever fluid is contained in the conduit with which thevalve communicates. As the under surface of the flange e is flat whilethe upper surface ofiits cooperating seat is convex, the relativerotation between such parts always insures such a close. ment betweenthe same as to render the va ve casing fluid pressure tight without theuse of packing material.

From the for oing description it will be e observed that I l iaveinvented an improved valve which will at allt'imes prevent leakage ofthe fluid controlled thereby without the use'of packing,

washer, or gasket such as are 1n01'd61 to open the same the hand disk.E? is rotatedtoward the left. Rotary motion thereby preventing.

enga e- 'of' a valve seat therein,

a valve casing, a valve cooperating a two-part rotary means operativelyconnecting the lower part of said stem and valve, an

annularflange having a flat under surface carried by the upper part ofsaid stem and projecting around the same, a convex seat at the upper endof said casing over which said flange extends, and means for retainingsaid flange in close contact with said convex seat.

2. The comblnation with a valve casing, of a valve seat therem, avalvecooperatmg H with said seat, a two-part rotary valve stem extendingwithin the valve casing, means operatively connecting the lower part ofsaid stem with said valve, removing said valve relatively to the lowerpart of said valve stem, an annular flange carried by the upper part ofsaid stem and projecting aroun the same, a circular seat at the upperend of said casing over which said flange extends, a cap surrounding thevalve stem and secured to the upper end of the valve casing below saidseat, and means inclosed within and interposed ,between said cap andsaid flange for'retaining the latter in close contact with said circularseat.

3. The combination with a valve casing,

of a valve seat therein, a valve 006 erating with said seat, a two-partrotary va ve stem extending within the valve casing, means operativelyconnecting the lower part of said stem with said valve, removing saidvalve relatively to the lower part of said valve stem, an annularflange. carried by the upper part of said stem and projecting around thesame, a circular seat at the upper end of said casing .over which saidflange extends, a cap surrounding the valve stem and secured to theupper end of the valve casing below said seat, and a spring inclosedwithin said cap for retaining said capin close contact with saidcircular seat. N

4. The combination with a valve casing, of a valve seat therein, a valvecooperating with said valve seat, a rotary valve stem, means operativelyconnecting said stem and valve, an annular flange having a flat undersurface carried by said stem and projecting around the same, a convexseat at the upper end of said casing over which said flange extends, acap surrounding said valve stem andsecured to the upper end of saidvalve casing below said seat, and a spring inclosed within andinterposed between said cap and said flange for retaining the latter inclose contact with said convex seat.

5. The. combination with a valve casing, a valve cooperating with saidseat, a rotary valve stem, means operatively connecting said stem andvalve, an annular flange having a flat under surface carried by saidstem and projecting around the same, the upper end of said valve casingbeing reduced to form a convex circular seat over which said flangeextends, a cap surrounding said "valve stem and engaging screw threadson the exterior of the valve casing below said convex seat, and a springincloscd within and interposed between said cap and flange for retainingthe latter in close contact with said convex seat.

6. The combination with a valve casing, a valve in said casing, atubular extension on said casing, said tubular extension having itsupper edge formed into a seat, a valve stem projecting through saidextension, :1 flange on said steni engaging said seat, a capscrew-threaded upon said extension, and means interposed between saidcap and said flange for forcing the flange against the seat when-saidcap is secured in place.

' 7. In combination with a valve casing, a

valve in said casing, a tubular extension on said casing, said tubularextension having its upper edge rounded in the form of an annular beadso as to make a seat, a valve stem projecting through said extension, aflange on said stem engaging said seat, a cap adjustably secured uponsaid extension, and means interposed between said cap and said flangefor forcing said seat.

In testimony whereof, I sign this specifi cation in, the presence of twoWitnesses.

E. P. ALLEN.

Witnesses: i

GEO. L. WILKINSON, C. A. MULLEN.

the flange against

